May 23, 2013 7:26 PM

Found this on the mud of the Thames by Battersea Bridge, and would love to know what it is. I'm guessing end of a horn of some description but the inner 'shelving' suggests it had something inside which makes me think it isn't a horn... hence needing your help.

Crab claws are usually hollow to allow for the soft tissue so I am not sure that this is what it is. Horns have two componants, an outer hollow keratin sheath and an inner bone cone. When the inner bone core is broken off the skull the inside has bony shelf like structures simillar to this specimen. So I favour a horn core and from the size a sheep or goat.